Sizing A Whole House Fan
Option #1: Efficient Cooling
1.5 – 2.0 CFM Per Sq. Ft Of Living Space. This option is recommended for homeowners who want all the benefits of whole house fan cooling, with the most cost effective solution.
Example: A homeowner with a 2000 sq. ft home, would look for a fan rating of (3,000 – 4,000 cfm).
Option #2: The Breeze Effect
2.5 to 3.0 CFM Per Sq. Ft of Living Space. This is recommended for homeowners who like to feel the “breeze effect” through their home. Cooling occurs quickly with more air flowing through your home.
Example: A homeowner with a 2000 sq. ft home, would look for a fan rating of (5000 – 6000 cfm).
Please keep in mind, that balance is key – as with any fan. you’ll need to ensure proper roof ventilation.